What Is the Difference Between Halo Exterra and Comfortboard?

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The difference between Halo Exterra by Logix Brands and Comfortboard by Rockwool comes down to how the product functions based on its material properties.

Halo Exterra is a graphite-enhanced expanded polystyrene (GPS) insulation with a facer laminated to the top and bottom surface that is designed for the exterior of the building enclosure. The product functions as continuous insulation installed directly on top of the sheathing or in some regions directly on top of the exterior studs.

Exterra Product Section

The insulation is secured in place with a plastic or metal cap nail with spacing dependant on manufacture specifications. Not only can Halo Exterra offer an R5 per nominal inch (1.06”) of thermal resistance, the integrated facer allows the product to function as the water control layer, meaning additional membranes are not required. To function as the water control layer all joints of the insulation board must be sealed.  

Rockwool Comfortboard is a semi-rigid mineral wool insulation for applications on the exterior of the building enclosure. Comfortboard has a lower thermal resistance at R4.3 per inch and due to the material properties of mineral wool, the product cannot function as a water control layer for the building enclosure assembly. This means another material must be added to the assembly at an additional cost.

In summary, Halo Exterra performs two functions in a building enclosure assembly (thermal resistance + functions as the water control layer with sealed joints), where as Comfortboard by Rockwool only performs a single function providing a somewhat lower thermal resistance.

About the author:
President, Logix Brands Ltd.